Anhydrous bleaching paste comprising at least one ceramide-type compound and method using it

Abstract

Paste for bleaching human keratinous fibres, and more particularly the hair, containing at least one organic inert liquid, at least one peroxygenated salt and at least one alkaline agent, wherein it comprises at least one ceramide-type compound. Method for bleaching human keratinous fibres using it, and an appropriate device.

1 . An anhydrous paste comprising at least one organic inert liquid, at least one peroxygenated salt, at least one alkaline agent, and at least one ceramide compound.  
     
     
         2 . An anhydrous paste according to  claim 1 , wherein the ceramide compound is selected from the group consisting of ceramides, glycoceramides, pseudoceramides and mixtures thereof.  
     
     
         3 . An anhydrous paste according to  claim 1 , wherein the ceramide compound is selected from the group consisting of compounds corresponding to the following formula (A):  
       
         
           
           
               
               
           
         
         in which:  
         R 1  denotes: 
 either a saturated or unsaturated, linear or branched C 1 -C 50 , preferably C 5 -C 50 , hydrocarbon radical, it being possible for this radical to be substituted with one or more hydroxyl groups optionally esterified with an acid R 7 COOH, R 7  being an optionally mono- or polyhydroxylated, linear or branched, saturated or unsaturated C 1 -C 35  hydrocarbon radical, it being possible for the hydroxyl(s) of the radical R 7  to be esterified with an optionally mono- or polyhydroxylated, linear or branched, saturated or unsaturated C 1 -C 35  fatty acid,  
 or a radical R″—(NR—CO)—R′, R denotes a hydrogen atom or a mono- or polyhydroxylated, preferably monohydroxylated, C 1 -C 20  hydrocarbon radical, R′ and R″ are hydrocarbon radicals of which the sum of the carbon atoms is between 9 and 30, R′ being a divalent radical,  
 or a radical R 8 —O—CO—(CH 2 ) p , R 8  denoting a C 1 -C 20  hydrocarbon radical, p being an integer varying from 1 to 12;  
 
         R 2  is chosen from a hydrogen atom, a saccharide radical, a sulphate or phosphate residue, a phosphorylethylamine radical and a phosphorylethylammonium radical, in which n is an integer varying from 1 to 4 and m is an integer varying from 1 to 8;  
         R 3  denotes a hydrogen atom or a hydroxylated or nonhydroxylated, saturated or unsaturated, C 1 -C 33  hydrocarbon radical, it being possible for the hydroxyl(s) to be esterified with an inorganic acid or an acid R 7 COOH, R 7  having the same meanings as above, and it being possible for the hydroxyl(s) to be etherified with a (glycosyl) n , (galactosyl) m , sulphogalactosyl, phosphorylethylamine or phosphorylethylammonium radical, it being also possible for R 3  to be substituted with one or more C 1 -C 14  alkyl radicals;  
         R 4  denotes a hydrogen atom, a methyl or ethyl radical, an optionally. hydroxylated, linear or branched, saturated or unsaturated C 3 -C 50  hydrocarbon radical or a radical —CH 2 —CHOH—CH 2 —O—R 6  in which R 6  denotes a C 10 -C 26  hydrocarbon radical or a radical R 8 —O—CO—(CH 2 ) p , R 8  denotes a C 1 -C 20  hydrocarbon radical, p being an integer varying from 1 to 12,  
         R 5  denotes a hydrogen atom or an optionally mono- or polyhydroxylated, linear or branched, saturated or unsaturated C 1 -C 30  hydrocarbon radical, it being possible for the hydroxyl(s) to be etherified with a (glycosyl) n , (galactosyl) m , sulphogalactosyl, phosphorylethylamine or phosphorylethylammonium radical,  
         with the proviso that when R 3  and R 5  denote hydrogen or when R 3  denotes hydrogen and R 5  denotes methyl, then R 4  does not denote a hydrogen atom, or a methyl or ethyl radical,  
         and mixtures thereof.  
       
     
     
         4 . An anhydrous paste according to  claim 1 , wherein the content of ceramide compound represents from 0.001 to 5% by weight relative to the weight of the anhydrous paste.  
     
     
         5 . An anhydrous paste according to  claim 1 , wherein the organic inert liquid is selected from the group consisting of polydecenes of formula C 10n H [(20n)+2]  in which n varies from 3 to 9, fatty acid esters of fatty alcohols, C 12 -C 24  fatty acid diesters of sugars, cyclic ethers or cyclic esters, silicone oils, mineral oils, vegetable oils, and mixtures thereof.  
     
     
         6 . An anhydrous paste according to  claim 5 , wherein the organic inert liquid is selected from the group consisting of polydecenes of formula C 10n H [(20n)+2]  in which n varies from 3 to 9, fatty acid esters of fatty alcohols, and mixtures thereof.  
     
     
         7 . An anhydrous paste according to  claim 1 , wherein the content of organic inert liquid is from 5 to 60% by weight relative to the weight of the anhydrous paste.  
     
     
         8 . An anhydrous paste according to  claim 1 , wherein the peroxygenated salt is selected from the group consisting of persulphates, perborates and percarbonates of ammonium or alkali metals, magnesium peroxide, and mixtures thereof.  
     
     
         9 . An anhydrous paste according to  claim 8 , wherein the peroxygenated salt content is from 10 to 70% by weight relative to the weight of the anhydrous paste.  
     
     
         10 . An anhydrous paste according to  claim 1 , wherein the alkaline agent is selected from the group consisting of urea, silicates, phosphates and bicarbonates of alkali or alkaline-earth metals, ammonia precursors, and mixtures thereof.  
     
     
         11 . An anhydrous paste according to the  claim 10 , wherein the content of alkaline agent is from 0.01 to 40% by weight relative to the weight of the anhydrous paste.  
     
     
         12 . A method for bleaching human keratinous fibres, comprising: 
 mixing, before use, an anhydrous paste defined according to  claim 1  with an aqueous hydrogen peroxide composition to provide a bleaching mixture,    applying the bleaching mixture obtained to an area of the fibres to be bleached,    leaving in the bleaching mixture for a sufficient period to obtain bleaching,    removing the bleaching mixture by rinsing with water optionally followed by washing with a shampoo, and then optionally drying.    
     
     
         13 . A method according to  claim 12 , wherein said anhydrous paste is an an anhydrous paste defined according to  claim 2 .  
     
     
         14 . A method according to  claim 12 , wherein said anhydrous paste is an an anhydrous paste defined according to  claim 3 .  
     
     
         15 . A method according to  claim 12 , wherein said anhydrous paste is an an anhydrous paste defined according to  claim 4 .  
     
     
         16 . A method according to  claim 12 , wherein said anhydrous paste is an an anhydrous paste defined according to  claim 5 .  
     
     
         17 . A method according to  claim 12 , wherein said anhydrous paste is an an anhydrous paste defined according to  claim 6 .  
     
     
         18 . A method according to  claim 12 , wherein said anhydrous paste is an an anhydrous paste defined according to  claim 7 .  
     
     
         19 . A method according to  claim 12 , wherein said anhydrous paste is an an anhydrous paste defined according to  claim 8 .  
     
     
         20 . A multicompartment device for bleaching human keratinous fibres, wherein it comprises at least two compartments of which one comprises an anhydrous paste according to  claim 1 , and the other an aqueous hydrogen peroxide composition.